If you’re looking for a show-stopping breakfast that feels indulgent yet surprisingly simple, this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe is a total winner. Imagine buttery croissants soaked in a rich egg custard, layered with savory breakfast sausage, creamy tangy cream cheese, crisp green onions, and melty white cheddar—all baked into one irresistible dish. It’s perfect for leisurely weekend mornings, holiday brunches, or when you just want to bring a little extra happiness to the table.
Ingredients You’ll Need
Gathering the right ingredients is half the fun for this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe. Each component plays an important role in building layers of flavor and texture that make this dish unforgettable.
- 8 – 10 small/medium croissants, stale: Slightly stale croissants absorb the egg mixture better, creating that perfect custardy yet flaky texture.
- 1 tablespoon olive oil: Used to brown the sausage and veggies, adding a lovely caramelized flavor.
- 1 lb breakfast sausage: The hearty protein base that brings bold, savory goodness to the casserole.
- 1/2 yellow onion, diced: Adds a gentle sweetness and depth of flavor to balance the sausage.
- 1 red bell pepper, diced: Provides a pop of color and a subtle crunch with a touch of sweetness.
- 4 oz cream cheese, room temperature: Melts into the sausage mixture for a creamy, tangy richness.
- 2 cups white cheddar, grated (divided): A sharp, melty cheese that is perfect both inside the filling and sprinkled on top.
- 3 green onions, sliced: Bright, fresh, and slightly pungent to lighten and elevate the overall flavor.
- 1/2 teaspoon paprika: Adds a hint of smoky warmth to the filling.
- 10 eggs: The binding agent that creates the custard soaking the croissants perfectly.
- 1 1/4 cups half and half: Richer than milk, it helps make the custard silky smooth.
- 1 tablespoon Dijon mustard: Adds a subtle tang that balances the richness.
- 2 tablespoons hot sauce (such as Frank’s or Tabasco): Just the right kick of heat to wake up the flavors without overwhelming.
- 2 tablespoons everything bagel seasoning: Sprinkled on top for a crunchy, savory finish with garlic, onion, and sesame notes.
- Kosher salt (about 1 teaspoon divided): Essential for seasoning throughout.
- Freshly cracked pepper (about 1/2 teaspoon divided): Adds a fresh, peppery bite to round out the flavors.
How to Make Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Step 1: Brown the Meat and Veggies
Heat the olive oil in a skillet over medium heat and add the breakfast sausage. Break it apart with a spoon as it cooks until mostly done, about 5–7 minutes. Then toss in the diced yellow onion and red bell pepper. Cook until the vegetables are soft and fragrant, which should take another 4–5 minutes. Set this mixture aside to cool to room temperature—this cooling step is key to preventing the cream cheese from melting prematurely.
Step 2: Mix the Filling
In a large bowl, combine the cooled sausage and vegetable mixture with the softened cream cheese, 1 1/2 cups of shredded white cheddar, paprika, and sliced green onions. Stir everything thoroughly until you’ve got a creamy, well-incorporated filling loaded with flavor and texture.
Step 3: Prep the Croissants
Slice each croissant in half lengthwise, like making little sandwich buns. Lightly grease a 9×13 inch baking dish, then arrange the bottom halves evenly across the dish. Spoon the sausage and cream cheese filling over each bottom half, then place the croissant tops back on to create mini sandwiches. This layering sets the stage for the custardy soak to penetrate beautifully.
Step 4: Mix the Eggs
Whisk together the eggs, half and half, Dijon mustard, hot sauce, 1/2 teaspoon kosher salt, and 1/2 teaspoon freshly cracked pepper in a blender or mixing bowl until the mixture is silky smooth and uniform. This egg custard is the magic that transforms the croissants into a decadent baked casserole.
Step 5: Pour and Set
Reserve about 2 tablespoons of the egg mixture for later brushing. Pour the rest evenly over the croissant sandwiches, making sure to saturate them thoroughly. Cover your casserole and let it soak at room temperature for at least 1 hour. If you want to prepare ahead, refrigerate overnight—this soak time is what makes the croissants perfectly tender and custardy inside.
Step 6: Preheat the Oven and Bake
Preheat your oven to 375°F (190°C). Before baking, give the tops of the croissants a gentle brush with the reserved egg mixture—you’ll get a gorgeous golden sheen. Sprinkle everything bagel seasoning and the remaining shredded white cheddar over the top for a flavorful crust. Bake uncovered for 40 to 45 minutes, until the custard is set, the cheese is bubbly, and the top is golden brown. Let the casserole rest a few minutes before serving to let everything settle beautifully.
How to Serve Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Garnishes
Fresh garnishes can elevate this casserole even more. Sprinkle additional sliced green onions or chives on top for a fresh, oniony bite. A handful of chopped fresh parsley or a light dusting of smoked paprika can add a lovely pop of color and subtle flavor contrast.
Side Dishes
This casserole is pretty hearty, but pairing it with light, refreshing sides works wonderfully. Consider serving alongside a crisp green salad with citrus vinaigrette, fresh fruit salad, or roasted tomatoes to balance the richness. A simple glass of freshly squeezed orange juice or hot coffee rounds out the meal perfectly.
Creative Ways to Present
Serving this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe in individual ramekins or mini baking dishes makes it feel extra special for guests. You can also transform leftovers into savory breakfast sandwiches by slicing the casserole and stacking it on toasted bread with a swipe of mustard or hot sauce. The versatility means you can enjoy it fresh or reinvent it deliciously.
Make Ahead and Storage
Storing Leftovers
Store any leftover casserole in an airtight container in the refrigerator for 3 to 4 days. Make sure to cover it well to keep it moist and prevent it from absorbing other fridge odors. When ready to enjoy again, it tastes just as comforting and flavorful.
Freezing
This casserole freezes beautifully. Wrap tightly with plastic wrap and aluminum foil or place in a freezer-safe container, then freeze for up to 2 months. Thaw overnight in the refrigerator before reheating for best texture and flavor retention.
Reheating
Reheat leftovers gently in a 350°F (175°C) oven for about 15 minutes, or until warmed through. This helps preserve the custard’s creaminess and the croissants’ slightly crisp edges. Alternatively, microwave on medium power in short bursts, but watch closely to avoid drying out.
FAQs
Can I use fresh croissants instead of stale ones?
While fresh croissants are delicious on their own, using slightly stale croissants in this recipe helps them soak up the egg custard without becoming too soggy. If using fresh, consider lightly toasting them first to dry them out a bit.
What can I substitute for breakfast sausage?
If you prefer, you can swap the breakfast sausage with cooked bacon, ham, or even a vegetarian sausage alternative. Each option will bring a different but equally delicious flavor profile to the casserole.
Can I make this recipe dairy-free?
To make a dairy-free version, use dairy-free cream cheese and cheese substitutes and swap the half and half for a plant-based milk such as oat or cashew milk. Keep in mind the flavor and texture will vary slightly.
How early can I assemble the casserole?
You can assemble the casserole the night before and refrigerate it overnight. This makes morning prep super easy and allows the croissants to soak up the custard fully for maximum flavor and tenderness.
Is this recipe suitable for large gatherings?
Absolutely! This recipe yields 8 servings and can be easily doubled or tripled to feed a crowd. Just use a bigger baking dish or multiple dishes, and adjust baking times accordingly.
Final Thoughts
This Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe is a total game changer for any breakfast or brunch. Its blend of flaky croissants, creamy cheese, savory sausage, and vibrant green onions baked to perfection creates a dish that’s cozy, comforting, and impressive all at once. Give it a try next time you want to treat yourself or your loved ones—trust me, it’s going to become one of your favorite go-to recipes for mornings that deserve something truly special.
Print
Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
- Prep Time: 30 minutes
- Cook Time: 45 minutes
- Total Time: 2 hours 15 minutes
- Yield: 8 servings
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: American
Description
This Croissant Breakfast Casserole is a savory and indulgent morning dish featuring flaky croissants filled with a creamy sausage, cream cheese, and cheddar mixture. Green onions and a dash of paprika add freshness and warmth, while the custard soaking creates a rich, custardy texture. Topped with shredded cheddar and everything bagel seasoning, this casserole is perfect for a hearty brunch or special occasion breakfast.
Ingredients
Croissant Base
- 8 – 10 small/medium croissants, stale
- 1 tablespoon olive oil
Sausage Filling
- 1 lb breakfast sausage
- 1/2 yellow onion, diced
- 1 red bell pepper, diced
- 4 oz cream cheese, room temperature
- 2 cups white cheddar, grated (divided: 1 1/2 cups for mixture, remainder for topping)
- 3 green onions, sliced
- 1/2 teaspoon paprika
Egg Custard
- 10 eggs
- 1 1/4 cups half and half
- 1 tablespoon Dijon mustard
- 2 tablespoons hot sauce (such as Frank’s or Tabasco)
- 2 tablespoons everything bagel seasoning
- Kosher salt (about 1 teaspoon divided)
- Freshly cracked pepper (about 1/2 teaspoon divided)
Instructions
- Brown the meat and veggies: Heat 1 tablespoon olive oil in a skillet over medium heat. Add the breakfast sausage and cook, breaking it apart with a spoon, until mostly cooked through. Then add the diced yellow onion and red bell pepper, cooking until the vegetables are soft and fragrant. Remove from heat and let cool to room temperature.
- Mix the filling: In a large bowl, combine the cooled sausage mixture with the room temperature cream cheese, 1 1/2 cups of shredded white cheddar, paprika, and sliced green onions. Mix thoroughly until well incorporated and creamy.
- Prep the croissants: Slice the croissants in half lengthwise. Lightly grease a 9×13 inch baking dish with nonstick spray or butter. Arrange the bottom halves of the croissants evenly in the baking dish. Divide the sausage filling evenly over the croissant bottoms, then place the top halves back over the filling to form sandwiches. Set aside.
- Mix the eggs: In a blender or mixing bowl, whisk together the eggs, half and half, Dijon mustard, hot sauce, 1/2 teaspoon kosher salt, and 1/2 teaspoon freshly cracked pepper until very smooth and uniform.
- Pour and set: Reserve about 2 tablespoons of the egg mixture for brushing later. Pour the remaining egg mixture evenly around and over the croissant sandwiches in the dish. Cover and let soak at room temperature for at least 1 hour or refrigerate overnight to allow the croissants to absorb the custard fully.
- Preheat the oven: When ready to bake, preheat the oven to 375°F (190°C).
- Bake: Before baking, brush the croissants lightly with the reserved egg mixture. Sprinkle the casserole with everything bagel seasoning and the remaining shredded white cheddar. Bake uncovered for 40 to 45 minutes until the custard is set, the top is golden brown, and the cheese is melted and bubbly. Let rest a few minutes before serving.
Notes
- Using stale croissants helps them absorb the egg custard better without becoming too soggy.
- You can prepare this casserole the night before and refrigerate it to save time in the morning.
- Feel free to substitute the breakfast sausage with a vegetarian sausage if preferred.
- Adjust the amount of hot sauce to your desired spice level or omit it for a milder flavor.
- If you don’t have everything bagel seasoning, a mixture of sesame seeds, poppy seeds, dried garlic, and onion flakes works well.
